Harrow



(No Model.)

J. L. MGKAY.

' HARROW. No. 271,499. Patented Jan.30,1883..

WITNESSES mm x,

ATTORNEYS.

u PUERS. Pbow-Ulhognphor. Wathingtnn. m:

with STATES PATENT @rrrcn.

JOHN L. MOKAY, F FRANKLIN, TENNESSEE.

HARROW.

SPECIFICATION forming part of Letters Patent No. 271,499, dated January30, 1833.

Application filed June 19, 1882. (X0 model.) i

harrows, specially of that class made in sec-' tions, and has for itsobject, among other things, to promote the strength of the individualteeth, to effect the thorough harrowing ot' the ground, and to adapt theoperation of the teeth to the condition of the ground.

The nature of this invention consists in the construction of the teetheach in an approximately V-shaped form, one arm or prong beingperpendicular and the other arm or prong inclined, in connection withtheir attachment and disposition with relation to the beams or bars ofthe harrow-frame,in rows, the forward arms of one row being connected toone beam of the harrow, and the rear arms of the same row connected to asecond beam, to which the forward arms ofthe succeedingrow areconnected, while the teeth of one row alternate with the teeth of theadjacent row, substantially as hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a perspective view of myimproved harrow. Fig.2 is an inverted plan View. Fig. 3 is an invertedend view; and Fig. 4 is an end elevation of my improved barrow, with oneof its teeth partly in section and in detail.

In carrying out my invention I employ harrow-sections A A, the two beingdetachably connected together, and so as to have independent movement ofeach other in moving over hilly or uneven ground. The means forconnecting the sections may consist of apertured or perforatedhook-shaped plates a (t, affixed to the front and rear sides of thesections and projecting beyond their ends, the plates to of one sectionfitting side by side with those of the other section. Itconsists,further,

preferably, of a rod or pins 1), passed through the apertures orperforations of said plates. These sections are provided on their underside with barrow-teeth B B, arranged in rows, the teeth of thesucceeding rows alternating with those of the preceding rows. The armsof each tooth are provided with .shoulders or flanges I), havingupwardly-projecting bolts or screwthreaded rods bflwhich passthrough andare nutted upon the upper side of the beams of the barrow-sections tobrace and fasten the teeth to said cross-bars. This arrangement of theteeth causes the thorough harrowing or pulverizing of the plowed ground,as that failed to be acted on by the preceding row of teeth is acted onby the following rows of teeth. The individual construction of theseteeth is that of an approximately V-shape formthat is to say, one arm orprong made to stand perpendicularly to the surface of the ground and theother arm or prong inclined upwardly from the lower end of the verticalarm, as shown particularly in Fig. 4. The divergent or upper ends of theteeth are fastened to cross bars or. beams of the barrow-section frames.The forward arms or prongs of one row are fastened to one cross-beam,and the rear arms or prongs thereof are fastened to a second cross baror beam, to which are fastened the forward arms or prongs of asucceeding row of teeth, but out of line or alternating therewith, whilethe rear arms of this latter row are fastened to a third cross bar orbeam outof line or alternating with the row whose forward arms areattached to said third cross-bar. This method offastening the rows ofteeth in place is observed through-- out the barrow-sections, resultingin the arrangement above ascribed to the teeth. The teeth are beveled orrounded on their front and rear edges.

Means are provided for the hitching ot' the team to either side of theconnected harrowsections by the employment of whiffletreesand chainshooked in eyes or clips on the said sections, or the use of othersuitable means.

It is preferable to use the machine with the inclined surfaces of theteeth presented toward the line of draft in working or harrowinguncleared ground. Otherwise the machine is used with the perpendicularsurfaces of the teeth presented toward the line of draft.

Having thus described myinvention, what I claim as new is- Inaharrow,the coinbinatiomwith the beams ternate with the teeth of the adj oinlngrow of Aofits frame, of the rows of approximately V- teeth,substantially as shown and described, 10 shaped teeth B,having thevertical bolts ba-nd and for the purpose set; forth. the nuts b theforward arms of one row being JOHN LUTHFP MCK AY connected to one beam,and the rear arms of the same row connected to the second beam, to lwhich the forward arms of the sncceedingrow are connected, While theteeth of one row ali Witnesses:

F. E. MeKAY, It. 11. MoKAY.

